Article
Engineering, Electrical & Electronic
Luyu Wang, Jia Song, Chenghai Ruan, Shengyang Xu, Chunyang Yu
Summary: An urgent need for a dual gas disaster sensor that can detect methane (CH4) and carbon monoxide (CO) at room temperature has been addressed. A sensing platform was created using molybdenum sulfide (MoS2) nanoflowers modified on a Quartz Crystal Microbalance (QCM) without heating. This sensor demonstrated dual sensitivity to CH4 and CO with ppm concentration at room temperature, and showed good short-term repeatability and long-term stability over two months. It proves to be a promising tool for monitoring coal mine gas.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Nanoscience & Nanotechnology
Jieun Son, Seulki Ji, Sungho Kim, Soyoung Kim, Seong K. Kim, Wooseok Song, Sun Sook Lee, Jongsun Lim, Ki-Seok An, Sung Myung
Summary: A highly facile method utilizing microcolumns integrated on a QCM gas-responsive system with enhanced chemical selectivity was reported for sensing and identifying volatile organic compound single gases. The addition of microcolumns on the QCM electrode increased the ability to accurately analyze frequency shifts upon sensing various single gas molecules. The system exhibited high detection response values above 50 ng/cm(2) for gases, with the microcolumn-equipped sensor showing improved gas identification ability based on distinct diverging behavior of time constants upon detection of different gases.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Applied
Luyu Wang, Jia Song, Yuhang Wu, Chunyang Yu
Summary: In this study, the quartz crystal microbalance (QCM) platform was used to detect nitrobenzene vapor. The PCN-224-based sensor showed sensitive and selective detection, with a quick response time of 16 s. The frequency shift in the gas sensor was proportional to the concentration of nitrobenzene vapor. This sensor also demonstrated excellent stability, indicating its potential for practical applications in public security.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Luyu Wang, Jia Song, Yuhang Wu, Chunyang Yu
Summary: Developing a long-term stable gaseous formaldehyde (HCHO) sensor is urgent. The modified Titanium dioxide (TiO2) nanorods on the Quartz Crystal Microbalance (QCM) sensing platform demonstrate excellent HCHO detection capabilities with a low detection limit of 50 ppb at normal temperature. The sensor also exhibits short response and recovery times of 10 s and 13 s, respectively, and satisfactory selectivity and short-term repeatability. Furthermore, the molecular formula of hydrate HCHO (HCHO•βH2O) in real air containing humidity is elucidated as HCHO•2.03-2.35H2O within a relative humidity range of 50-90%.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Chemistry, Multidisciplinary
Zhiheng Ma, Tongwei Yuan, Yu Fan, Yang Chen, Yueling Bai, Zhixuan Cheng, Jiaqiang Xu
Summary: The capture and separation of CO2 is crucial for addressing global warming. In this study, a new method using QCM was proposed to extract the CO2 adsorption enthalpy on MOFs, and its reliability and versatility were demonstrated through experiments.
Article
Chemistry, Analytical
Guangyu Qi, Fangfang Qu, Lu Zhang, Shihao Chen, Mengyuan Bai, Mengjiao Hu, Xinyan Lv, Jinglei Zhang, Zhenhe Wang, Wei Chen
Summary: This paper presents a method using a nanoporous graphene oxide-functionalized quartz crystal microbalance gas sensor for the detection of low-concentration trimethylamine. The sensor exhibits high sensitivity, excellent linearity, and response capability, as well as good repeatability and selectivity towards TMA.
Article
Chemistry, Multidisciplinary
Jianjian Qiu, Dongmei Ke, Hancui Lin, Yilin Yu, Qunhao Zheng, Hui Li, Hongying Zheng, Lingyun Liu, Jiancheng Li
Summary: A QCM-based 2-PEA gas sensor was developed using aldehyde functionalized mesoporous carbon as the sensing material, demonstrating improved sensitivity and selectivity towards 2-PEA vapor. The high concentration of active sites and the presence of the -CHO group in FDU-15 were found to play crucial roles in the adsorption and response to 2-PEA.
CHINESE CHEMICAL LETTERS
(2023)
Article
Polymer Science
Ana Trajcheva, Nikolaos Politakos, Bertha T. Perez, Yvonne Joseph, Jadranka Blazevska Gilev, Radmila Tomovska
Summary: Graphene nanoribbons (GNR) are narrow strips of graphene in one dimensional morphology with extraordinary properties, owing to the large edges that offer numerous interfacial contact area to the polymer phase in the composite materials. By using dispersed media polymerization as a green synthesis method, waterborne polymer/GNR nanocomposites were produced for the first time. The nanocomposites showed strong mechanical and thermal reinforcement due to the lack of aggregation during structuring of GNRs within the polymer matrix and the established covalent bonding between the polymer and GNRs phases. Sensors based on these nanocomposites exhibited a large sensor response in a short time to low concentrations of toxic gases, with selectivity towards NH3 likely due to the interactions with the composite materials by joint Wan der Waals forces and hydrogen bonding.
Article
Engineering, Electrical & Electronic
Manuel Aleixandre, Takamichi Nakamoto
Summary: This work improves the previously proposed procedure of active odor sensing by introducing online learning of parameters to enhance the robustness. The procedure involves measuring odor using a sensor array and reproducing the target odor using an odor blender. The results demonstrate that the system can adapt to sensor parameter changes, improving the robustness of the active sensing procedure.
IEEE SENSORS JOURNAL
(2022)
Article
Physics, Applied
Fumihito Kato, Yu Sato, Hiroki Ato, Haruki Kuwabara, Yuto Kobayashi, Kensuke Nakamura, Noriyasu Masumoto, Hiroyuki Noguchi, Hirotsugu Ogi
Summary: This paper investigates the structural design of a wireless-electrodeless quartz crystal microbalance sensor, achieving a high-quality factor by optimizing micropillar arrangement to reduce structural damping. The high Q-factor was successfully demonstrated in experiments for detecting extremely low concentrations of hydrogen gas.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Pengjia Qi, Ziwei Xu, Tingting Zhou, Tong Zhang, Hongran Zhao
Summary: Chitosan-functionalized mesoporous silica MCM-41 composite materials were prepared which exhibited improved sensitivity and reliability in QCM sensors compared to individual chitosan and MCM-41 sensors. The optimal sensor showed excellent properties such as negligible humidity hysteresis, short response and recovery times, and good long-term stability. The adsorption mechanism of water molecules on the sensitive films was investigated using Langmuir adsorption isotherm model and Gibbs free energy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Roman Fernandez, Maria Calero, Jose Vicente Garcia-Narbon, Ilya Reviakine, Antonio Arnau, Yolanda Jimenez
Summary: The method developed in this study allows for fast measurement of a large number of sensor responses with high time resolution by estimating frequency shift and dissipation shift, and can be implemented in a low-cost readout electronic circuit.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Lirong Tang, Weixiang Chen, Bo Chen, Rixin Lv, Xinyu Zheng, Cheng Rong, Beili Lu, Biao Huang
Summary: This study developed a high-sensitivity and low-cost humidity sensor based on nitro-modified cellulose nanocrystals, which demonstrated rapid response and excellent reliability in a wide relative humidity range. The nanostructured cellulose material showed promising potential for multiple applications in high-performance sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Review
Engineering, Electrical & Electronic
Luyu Wang, Jia Song
Summary: This review provides an overview of commonly used gas sensing techniques for detecting aniline vapor and discusses the different sensing materials used. It concludes with an outlook for the future development of high-performance aniline sensors.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Chemistry, Analytical
Jinchul Yang, Jinyoung Park
Summary: In this work, the sensing behaviors and mechanisms of two crosslinked copolymers were compared for their ability to detect HCl gas. It was found that the C2-DMA film, prepared by photopolymerization on quartz crystal electrodes, exhibited higher binding capacity, sensitivity, and selectivity compared to the C0-DMA film. Therefore, the C2-DMA film-coated QC electrode could be used as a low-cost and easily prepared HCl gas sensor.
Article
Engineering, Environmental
Lorena Di Zazzo, Abhishek Kumar, Rita Meunier-Prest, Corrado Di Natale, Roberto Paolesse, Marcel Bouvet
Summary: Metallocorrole derivatives are a novel class of coordination complexes with tunable properties and have been successfully used in various applications. In this study, new polycorroles materials were synthesized and deposited on electrodes in a one-step electrochemical method. The resulting conductive films with controlled thickness showed different properties depending on the electro-polymerization conditions. The combination of polycorrole films with lutetium bis-phthalocyanine resulted in highly sensitive double lateral heterojunction (DLH) sensors for ammonia detection.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Analytical
Rosamaria Capuano, Antonella Mansi, Emilia Paba, Anna Maria Marcelloni, Alessandra Chiominto, Anna Rita Proietto, Andrea Gordiani, Alexandro Catini, Roberto Paolesse, Giovanna Tranfo, Corrado Di Natale
Summary: This paper characterizes the volatile organic compounds (VOCs) pattern emitted in vitro by Legionella pneumophila cultures and compares it with those produced by other Legionella species and by Pseudomonas aeruginosa. The results show that the VOCs can differentiate Legionella pneumophila from other waterborne microorganisms.
Article
Dentistry, Oral Surgery & Medicine
Silvia Luzi, Leonardo Mancini, Francesco Tarallo, Rebecca Jewel Manenti, Antonella Mattei, Fabiana Fiasca, Enrico Marchetti
Summary: This study evaluated the effectiveness of three commercially available mouthwashes in suppressing morning breath. The results suggest that Mentadent Professional (R) Chlorhexidine 0.05% with vitamin C (ChxC) may be more effective in reducing volatile sulfur compounds (VSCs) levels compared to the placebo. However, there were no statistically significant differences among the mouthwashes and placebo in terms of organoleptic indices.
INTERNATIONAL JOURNAL OF DENTAL HYGIENE
(2023)
Article
Chemistry, Multidisciplinary
Lucia Meme, Fabrizio Bambini, Gianni Gallusi, Davide Sartini, Valentina Pozzi, Monica Emanuelli, Enrico M. Strappa, Stefano Mummolo
Summary: The use of a custom-made magnetic rubber dam has the potential to generate a static magnetic field and significantly affect cell proliferation, which could lead to significant improvements in guided bone regeneration.
APPLIED SCIENCES-BASEL
(2023)
Article
Dentistry, Oral Surgery & Medicine
Leonardo Mancini, Daniel S. S. Thoma, Enrico Marchetti, Jung Ronald Ernst, Franz J. J. Strauss
Summary: This study describes a novel 3D method for estimating the emergence profile and restorative angles of single implant-supported crowns, including the buccal sites. The crowns were scanned using an intraoral scanner and analyzed using 3D software. The results show that this 3D analysis method is reliable and applicable in daily practice.
JOURNAL OF ESTHETIC AND RESTORATIVE DENTISTRY
(2023)
Article
Chemistry, Physical
Massimo Fanfoni, Beatrice Bonanni, Roberto Martini, Anna Sgarlata, Fabrizio Caroleo, Roberto Paolesse, Claudio Goletti
Summary: The morphology of films formed by corrolemolecules from ethanol solution on gold substrate was examined using scanning tunneling microscopy both in situ (wet sample) and ex situ (dry sample). Despite different conditions, the morphology of the corrole overlayer on the film resembles a leopard skin in both cases, where the speckles represent incomplete coverage by flat molecules. Quantitative analysis of the images revealed that the last layer of both films only differed by a scale factor despite the diverse formation conditions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Review
Cell Biology
Gaetano Isola, Simona Santonocito, Saturnino Marco Lupi, Alessandro Polizzi, Rossana Sclafani, Romeo Patini, Enrico Marchetti
Summary: Considerable progress has been made in understanding the etiopathogenesis of periodontitis and its interaction with the host. Oral health and disease have been found to be important in systemic conditions like cardiovascular diseases and diabetes. Recent DNA sequencing studies have shown how oral infections can occur in distant sites and organs. This review aims to provide an updated understanding of the association between periodontitis and systemic diseases.
MEDIATORS OF INFLAMMATION
(2023)
Article
Biochemistry & Molecular Biology
Ilaria Tomei, Beatrice Bonanni, Anna Sgarlata, Massimo Fanfoni, Roberto Martini, Ilaria Di Filippo, Gabriele Magna, Manuela Stefanelli, Donato Monti, Roberto Paolesse, Claudio Goletti
Summary: Reflectance anisotropy spectroscopy (RAS) is widely used in the investigation of organic compounds, especially porphyrins and porphyrin-related compounds, due to its unique characteristics. The CD-RAS technique, which measures the circular dichroism of samples, allows for the study of the anisotropy of the optical properties under circularly polarized light. The open structure and flexibility of this new spectrometer make it suitable for coupling with UHV systems or other experimental configurations. In this manuscript, the CD-RAS technique is detailed and calibration tests with chiral porphyrin assemblies are reported to validate the results obtained using a commercial spectrometer.
Article
Chemistry, Analytical
Leonardo Papale, Alexandro Catini, Rosamaria Capuano, Valerio Allegra, Eugenio Martinelli, Massimo Palmacci, Giovanna Tranfo, Corrado Di Natale
Summary: Indoor locations with limited air exchange can easily be contaminated by harmful volatile compounds. Thus, it is important to monitor the distribution of chemicals indoors to reduce associated risks. In this study, a monitoring system based on a Machine Learning approach is introduced, which utilizes a low-cost wearable VOC sensor in a Wireless Sensor Network (WSN) to process information and localize mobile sensor units.
Article
Chemistry, Analytical
Mauro Tomassetti, Riccardo Pezzilli, Claudio Leonardi, Giuseppe Prestopino, Corrado Di Natale, Luigi Campanella, Pier Gianni Medaglia
Summary: This study demonstrates that introducing nanostructured layered double hydroxides (LDHs) into the anode compartment can enhance the kinetic performance of a direct catalytic ethanol fuel cell (DCEFC). The calibration sensitivity of the method increases by 1.3-fold with the introduction of LDHs and even further in the presence of hydrogen peroxide. By modifying the fuel cell with enzyme catalase crosslinked on LDHs and in the presence of hydrogen peroxide, the calibration sensitivity increases by 8-times. This modification shows positive results in ethanol detection for analytical applications and can also improve the energy performance of a DCEFC.
Article
Engineering, Environmental
Fabrizio Caroleo, Gabriele Magna, Sara Nardis, Alexandro Catini, Valerio Allegra, Corrado Di Natale, Roberto Paolesse
Summary: Monitoring fluoride ions in drinking water is crucial for human health. A simple and low-cost device was developed using (Hydroxy)[5,10,15-tri-tolylcorrolato]silicon complexes [SiTTC(OH)], which can bind to fluoride ions and cause a significant color change, to detect fluoride ions in aqueous media. By optimizing the preparation protocol of CC-SiTTC(OH) strips, a colorimetric measurement setup similar to photo-assisted technique (PT) was used to accurately measure the concentration of fluoride ions in water samples, with a limit of detection lower than the legal limit allowed by WHO.
CHEMICAL ENGINEERING JOURNAL ADVANCES
(2023)
Article
Chemistry, Analytical
Lorena Di Zazzo, Sujithkumar Ganesh Moorthy, Rita Meunier-Prest, Eric Lesniewska, Corrado Di Natale, Roberto Paolesse, Marcel Bouvet
Summary: The versatility of metal complexes of corroles has raised interest in the use of these molecules as elements of chemical sensors. To compensate for the scarce conductivity, corroles are often used to functionalize the surface of conductive materials or incorporated into heterojunction devices. These heterostructure sensors can detect ammonia and relative humidity with high sensitivity.
Article
Chemistry, Multidisciplinary
Giacomo Picci, Sara Farotto, Jessica Milia, Claudia Caltagirone, Vito Lippolis, Maria Carla Aragoni, Corrado Di Natale, Roberto Paolesse, Larisa Lvova
Summary: We have developed a new type of acyclicsquaramidereceptors (L1-L5) that can selectively detect ketoprofen and naproxen anions (KF- and NS-, respectively) in water. The receptors form hydrogen bonds with the anions, and compounds L1-L5 have been tested as ionophores for the detection of KF- and NS- in polymeric membranes. The developed sensors show high precision detection capabilities with low relative errors and high sensitivity and selectivity towards NS-.
Article
Dentistry, Oral Surgery & Medicine
Roberto Giffi, Davide Pietropaoli, Leonardo Mancini, Francesco Tarallo, Philipp Sahrmann, Enrico Marchetti
Summary: This study investigated the efficiency of various decontamination methods (GC, G-Air, E-Air, and TiB) in vitro using a novel spectrophotometric ink-model. The results showed that TiB was the most effective method for debridement, while G-Air appeared to be the least efficient.
JOURNAL OF PERIODONTAL AND IMPLANT SCIENCE
(2023)
